Hey @Sledmore,From the look of the console its to do with a gifts table. You can search for "baseid" in the emulator to find the query and what table the column belongs in. (I haven't personally used Mercury).
If you use Navicat find the table open it, hold ctrl + d and you'll be in the design view and able to add a new field. I assume the type would be an integer, 11 as the size will do.